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Section 1: Product Identification
   Chemical Name:       Bis(cyclopentadienyl)dimethylhafnium, min. 97%    
   CAS Registry Number:       37260-88-1    
   Formula:       C12H16Hf    
   EINECS Number:       none    
   Chemical Family:       organometallic complex    
   Synonym:       Dimethylbis(cyclopentadienyl)hafnium, min. 97%    

Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title compound       37260-88-1       100%       0.5mg/m3 (as Hf)       0.5mg/m3 (as Hf)    

Section 3: Hazards Identification
   Dust may be irritating to skin, eyes and mucous membranes of nose and throat. Moisture may liberate heat
   Emergency Overview:
   and vapors of cyclopentadiene.
   Primary Routes of Exposure:       Ingestion, inhalation    
   Eye Contact:       May cause slight to mild irritation of the eyes.    
   Skin Contact:       May cause slight to mild irritation of the skin.    
   Inhalation:       May be irritating to the nose, mucous membranes and respiratory tract.    
   Ingestion:       No information is available on the physiological effects of ingestion.    
   Acute Health Affects:       May be irritating to skin, eyes, mucous membranes, and respiratory tract.    
   Chronic Health Affects:       No information available on long-term chronic effects.    
   NTP:       No    
   IARC:       No    
   OSHA:       No    

SECTION 4: First Aid Measures
   Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
   Eye Exposure:
   assistance in keeping their eye lids open. Get immediate medical attention.
   Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
   Skin Exposure:
   irritation persists.
   Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
   in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
   Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
   vomiting only if directed by medical personnel.

SECTION 5: Fire Fighting Measures
   Flash Point:       none    
   Autoignition Temperature:       none    
   Explosion Limits:       none    
   Extinguishing Medium:       carbon dioxide, dry powder or foam    
   Fire fighters should be equipped with a NIOSH approved positive pressure self-contained breathing apparatus
   Special Fire Fighting Procedures:
   and full protective clothing.
   Hazardous Combustion and       If involved in a fire this material may emit toxic fumes of carbon monoxide, and hafnium oxide.    
   Decomposion Products:
   Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

SECTION 6: Accidental Release Measures
   Small spills can be mixed with vermiculite, sodium carbonate or other suitable noncombustible adsorbent and
   Spill and Leak Procedures:
   swept up.

SECTION 7: Handling and Storage
   Handling and Storage:       Store the material under an inert atmosphere of nitrogen or argon in a tightly sealed container.    

SECTION 8: Exposure Controls and Personal Protection
   Eye Protection:       Always wear approved safety glasses when handling a chemical substance in the laboratory.    
   Skin Protection:       Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.    
   Ventilation:       Handle the material under an inert atmosphere of nitrogen or argon.    
   If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator
   Protection Program to be in compliance with 29 CFR 1910.134.
   Ventilation:       Handle the material under an inert atmosphere of nitrogen or argon.    
   Additional Protection:       No additional protection required.    

SECTION 9: Physical and Chemical Properties
   Color and Form:       white xtl    
   Molecular Weight:       338.75    
   Melting Point:       no data    
   Boiling Point:       subl. 90°C /0.1mm    
   Vapor Pressure:       no data    
   Specific Gravity:       no data    
   Odor:       none    
   Solubility in Water:       insoluble    

SECTION 10: Stability and Reactivity
   Stability:       air sensitive (store cold)    
   Hazardous Polymerization:       no hazardous polymerization    
   Conditions to Avoid:       exposure to air    
   Incompatibility:       strong oxidizing agents, mineral acids and halogens.    
   Decomposition Products:       hafnium oxide, carbon monoxide, carbon dioxide, hydrogen chloride and organic fumes.    

SECTION 11: Toxicological Information
   RTECS Data:       No information available in the RTECS files.    
   Carcinogenic Effects:       no data    
   Mutagenic Effects:       no data    
   Tetratogenic Effects:       no data    

SECTION 12: Ecological Information
   Ecological Information:       No information available    

SECTION 13: Disposal Considerations
   Disposal:       Dispose of according to federal, state, and local regulations.    

SECTION 14: Transportation
   Shipping Name (CFR):       Non-hazardous    
   Hazard Class (CFR):       NA    
   Additional Hazard Class (CFR):       NA    
   Packaging Group (CFR):       NA    
   UN ID Number (CFR):       NA    
   Shipping Name (IATA):       Non-hazardous    
   Hazard Class (IATA):       NA    
   Additional Hazard Class (IATA):       NA    
   Packaging Group (IATA):       NA    
   UN ID Number (IATA):       NA    

SECTION 15: Regulatory Information
   TSCA:       Not listed in the TSCA inventory.    
   SARA (Title 313):       Title compound not listed.    
   Second Ingredient:       none    


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